The $40 Raspberry Pi computer has finally shipped, and if you were lucky enough to get one, what exactly should you do with it?

Hackers are buzzing with ideas from Pi-powered arcade machines and drones to the home automation and low-cost tablets. TechRepublic has delved into the Raspbery Pi's developer forums, and here's our round-up of the best ideas so far, ranging from the eminently achievable to the massively ambitious.

1. Media streamer

Setting up a media centre using the Raspberry Pi is a popular choice, perhaps unsurprisingly given how easy it is to connect the board to a TV via composite or HDMI.

Setting up a Pi-based streamer will be relatively straightforward using the free open source media centre software XBMC. The software can stream music and video stored online or locally, and can be configured to work with TV catch-up services like BBC iPlayer, as well as being completely controllable using a remote control.

However there is one rather large drawback, the on-demand film streaming services offered by Lovefilm and Netflix are both currently incompatible with XBMC running on the Pi. Anyone wanting to stream content wirelessly will also have to add a USB wifi adapter.

2. Arcade machine

Do you yearn for days spent in dingy arcades, pumping change into cabinets and battling pixellated 16-bit foes?

The Raspberry Pi will help greying gamers relive their misspent youth thanks to a number of projects to bring classic arcade game and 1980s computer emulators to the system.

If handheld games are more your thing then you could always follow in the footsteps of this more ambitious project, which involves connecting up the Pi to a 3.5-inch TFT screen to create a portable gaming system.

3. Tablet computer

While not a straightforward task, modders have already identified LCD touchscreens and batteries that could be used. The main challenge seems to be keeping costs down and finding a touchscreen-enabled distro of Linux that works with the Pi's ARM 11 processor.

And while it might lack the sleek lines of a MacBook Air, this idea for a Raspberry Pi laptop, or more accurately a Raspberry Pi computer crossed with a suitcase, is starting to take shape on the Raspberry Pi.org forums.

4. Home automation

Too lazy to press a light switch? Can't be bothered to open the curtains in the morning? Then the Raspberry Pi could be just what you're waiting for.

ZigBee systems can be set up to support a range of tasks, including remote controlled air conditioning and lighting, and checking whether doors are open or closed.

5. Carputer

Creating a touchscreen, in-car tablet computer based on the Pi is another popular goal among modders.

Tech hobbyists want a Pi carputer to be a media player and GPS that can run off the cigarette lighter, and have pulled together a list of specs for the device.

There is even talk of further adding a web cam to the device to create a black box that would record the car's journeys or, even more ambitiously, hooking it up to the car's diagnostic system to provide a real time display of the engine's state.

6. Internet radio

Internet radios still cost a pretty penny, so why not pair up the Pi with a low-cost LCD screen, some speakers and create your own.

Various Pi-based internet radio projects already exist and are piecing together the components and code needed to create a Pi-based internet radio, and it seems only a matter of time before this becomes a reality.

7. Controlling robots

Robots and Raspberry Pi seem to be a match made in heaven, if hobbyist projects are anything to go by.

Messing around with robots and the Raspberry Pi will be helped by expansion boards for the Pi like the forthcoming Gertboard, which will make it easier to hook the computer to a range of motors and sensors.

8. Cosmic computer

As far fetched as it sounds, the Raspberry Pi is even being considered for a trip into space.

The idea is that Raspberry Pi computers could provide a low-cost, off the shelf alternative to the bespoke hardware used normally in spacecraft and satellite systems. Using scores of Raspberry Pi boards would build redundancy into the platform, allowing one board to take over if another fails.

The University of Surrey is already trialling the use of off the shelf computing in the place of bespoke hardware, by sending an Android smartphone into orbit on board a 4kg nano-satellite.